【—语法对原因状语从句的总结】下文为同学们带来的是对原因状语从句的分析并对because, since, as和for的用法比较。
原因状语从句
比较:because, since, as和for
1)because语势最强,用来说明人所不知的原因,回答why提出的问题。当原因是显而易见的或已为人们所知,就用as或 since。
I didn't go, because I was afraid.
Since /As the weather is so bad, we have to delay our journey.
2)由because引导的从句如果放在句末,且前面有逗 号,则可以用for来代替。但如果不是说明直接原因,而是多种情况加以推断,就只能用for。
He is absent today, because / for 初中英语 he is ill.
He must be ill, for he is absent today.
对because, since, as和for的比较同学们是否理解了,如果还有不懂得可以参考其他更多知识。
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